Grate for furnaces



(No Model.)

S. E. BURKE.

@RATE POR FURNAGBS.

No.828, 90. P tente Jul 8,1885.

G lml- Animm .nllml NITED STATES 'PATENT OEEicEC STEPHEN EMETT BURKE, OF EDON, OHIO.

GRATE FOR'FURNACES.

SPECIFICATION forming part of Letters Patent No, 323,290, dated July 28, 1885. Application filed May '9, 1884. (No model.)

By reason of the sharp angles presented, the

To all whom t may concern:

Be it known that l, STEPHEN EMETT BURKE, form of the ledges, pivots, and shoulder shown a citizen of the United States, residing at Edon, is preferred; but I do not intend limiting myr in the county of Williams and State of Ohio, self to such exact forms, when other forms em- 55 haveinvented certain new and useful Improvebodying the said three parts can be used to ments in Grates for Furnaces for Steam-Em good purpose. gines; and I do hereby declare the following The shafts constructed as described are to be a full, clear, and exact description of the pigtoed at both front and rear ends ofthe grate, invention; Snoh 21S WH enable oneIS Skilled in with their shoulders toward each other, and 6 the art t0 which it apnerbains t0 make and use l theshaft next to the furnace-front is provided the same. l with a lever, K, which extends through the My invention relates to gratos fol fnlneoes wall, as shown, and by which the shaft can be for steam-engines, and has for its object to Oscillated provide means for shaking the grate 'J0 free When the parts are applied as described 65 i5 the draft, which shall be simple, inexpensive, and Shown, the grate is supported en pivots, and efficient; and it consists in the construction which enable it to be moved with perfect ease and the Combination of Parts, Whlon Will be back and forth to free it from ashes, and therehereinafter particularly described, and then by increase the draft specifically dened by the Claims The movement imparted to the grate by de- 7o 2o Figure 1 is a vertical longitudinal section pressingor elevating thelever is an alternately l I l through the furnace; Fg- 2, a Pelspeot'e of rising and falling motion, and also a reciproone of the supporting and shaking shafts, and oatory motion` to which is added a jarring Fig, 3 a ploii of the grate withfportions broken motion at each reciprocation of the grate, first away. at one end and then at the other end, caused 75 25 In the drawings, theletterAdesignates the by the shoulders or bumpers Von the shafts masonry walls of the furnace, of any approved striking each grate-bar. rlhe effect thus proform, supporting the boiler B, and provided duced is a complete and easy sifting of thein its front Wil-h the (1001 D, fOI ntlOdllOllg ashes from the grate and consequent increase the fuel, and with the draf -door E, while F of draft. 8o 3o designates the lire-box. These parts may all The wedgeshaped pivots are shown at opbe of any preferred well-known construction, pogite ends of the shaft; but the effect is the and Will 11015 be flllthel' deSClbed, ELS SllCh are l same as if they extended from end to end, and

not my HVGDOH- less material is required. i

The grate is composed of a series of bars, G, I am aware that it is old to support grate 8:

dat on the top and preferably inclined on the bars on rods formed with two sets of pivots bottom from the center toward both ends, and fitting in recesses in the bars, the said pivots c near each end having 2L notch, H, preferably acting ascog-teeth of the same radius on a V-shaped, formed in the bottom face. The wheelto move the grate-bars back and forth;

grate is supported at the front and rear by a but my invention differs therefrom in support- 9o 4o rod or shaft, I, the lower face of which, prefing the grate-bars or grate at both ends on erably at or near its ends only, is formed with ledges projecting from shafts, and providing V or wedge shaped pivots a,which rest in rethe same shafts with bumpers having a differcesses or depressions b, preferably V or wedge ent radius from the ledges, whereby, in addishaped, formed in a plate, J,which is set into tion to the oscillatory and reci procatory mo- 9 5 the side walls of the furnace, as shown, while tion of the grate, there is a jarring motion imthe upper face of the shaft is formed with a parted to it in the oscillation of the shafts.

ledge, c, preferably V or wedge shaped,which Having described myinventio'n and set forth lits into the notch of the grate-bar, and also its merits, what Ifclaim is` with a shoulder or bumper, d, intermediate of l. The combination,with the movable grateroo 5o the pivots and ledge, and preferably V or bars notched at both ends, of the supportingwedge shaped, as shown. shafts formed with pivots on their lower edges,

mit.; e

with ledges on their upper faces entering the notches of the grate-bars and supporting the latter, and with shoulders 0r bumpers on their inner opposing faces intermediate of theledges and pivots, the same ledges supporting the grate-bars at both ends of their reciprocation, whereby the grate-bars will be oscillated, reciprocated, and jarred, substantially as and for the purposes set forth. p

2. The co1nbination,with the movable gratebars lnotched at both ends, of the shafts formed on their lower faces with wedge-shaped pivots, on their upper faces with wedge-shaped ledges,

and on their inner kopposing faces intermediate of the ledges and pivots with wedge-shaped 15 bumpers or shoulders, theledges fitting in the notches of the grate-bars and supporting the latter at both ends of their reciprocaton, and recessed plates forv the pivots to rest in, substantially as and for the purposes set forth.

ln testimony whereof I affix my signature in presence of two witnesses.

' STEPHEN EMETT BURKE. Vitnesses:

HIRAM B. MERCHANT, JOHN KLINK. 

